Portable rig front



March 27, 1934. J B, cL- 1,952,971

PORTABLE RIG FRONT Filed Sept. 8, 1933 2 Sheets-Sheet 1 J: r lvzm-onATTORN EY March 27, 1934. J CLARK 1,952,971

PORTABLE RIG FRONT Filed Sept. 8, 1933 2 Sheets-Sheet 2 INVENTOR ATTORNEY Patented Mar. 27, 1934 UNITED STATES PATENT OFFICE PORTABLE RIG FRONTJames B. Clark, Oklahoma City, Okla. Application September 8, 1933,Serial No. 688,664

3 Claims. (Cl. 255-11) The invention relates to portable rigs for oilwells and the like and has for the primary object the provision of adevice of the above-stated character which will be inexpensive toconstruct and operate and may be conveniently moved from one place toanother and will provide in a single unit a mechanism capable ofsuccessfully actuating well tools of different kinds for performingdifferent characters of well work, such as drilling wellsdeeper, placingcasings or tubings in wells, drilling through sand, and for removingfrom wells lost tools, sucker rods and the like.

With these and other objects in view this invention consists in certainnovel features of construction, combination and arrangement of parts tobe hereinafter more fully described and claimed. For a completeunderstanding of my invention, reference is to be had to the followingdescription and accompanying drawings, in which Figure 1 is a sideelevation illustrating a well rig constructed in accordance with myinvention. Figure 2 is a top plan view illustrating the same. Figure 3is a fragmentary side elevation illustrating a spool for operating awell casing positioning mechanism.

Referring ,in detail to the drawings, the numeral 1 indicates the mainsupporting frame of rigid construction and provided at one end withhooks 2 to receive anchoring cables (not shown) when the opposite end ofthe frame is arranged adjacent a well. A power source 3 is mounted onthe frame 1 laterally of the longitudinal axis of the frame and, in thisinstance, is shown to be a steam engine wherein the crank shaft 4thereof is arranged transversely of the frame and in alignment with apower take-off shaft 5 rotatably supported by journals 6 carried by theframe 1. Sprocket gears 7, 8 and 9 are journaled on the power take-offshaft and the sprocket gear '7 is connected and disconnected with thepower take-off shaft by a clutch 10 controlled by a foot pedal 11located at one side of the frame 1. A clutch 12 is employed forconnecting the sprocket gears 8 and 9 to the power take-off shaft and iscontrolled by a foot pedal 13 located adjacent the foot pedal 11. Theclutch 12 is capable of three positions, namely, a neutral position, aposition to connect the sprocket gear 8 to the power take-off shaft anda position to connect thesprocket gear 9 to the power takeoff shaft.Arranged adjacent the power take-off shaft on the frame 1 is anauxiliary shaft 14 supported by journals 15 on the frame 1 and hassecured thereto sprocket gears 16 and 17. The sprocket gears 16 and 17vary as to size with respect to each other and are connected to thesprocket gears 8 and 9 by sprocket chains 18 so that the auxiliary shaft14 may be driven from the power take-off shaft at different speeds.

A drum or spool 19 employed for operating a drilling line is journaledon its supporting shaft 0- 20 carried by the frame 1 adjacent the frontend of the latter and a clutch 21 is provided between the spool 19 andthe sprocket gear 22, the latter being connected to a sprocket gear 23secured to the auxiliary shaft 14 by a sprocket chain 24. 5 Thus it willbe seen that the spool 19 may be driven at different speeds and may beconnected and disconnected with the power means by the clutch 21, thelatter being controlled by a foot pedal 25. The clutch 12 is controlledby a foot 7 pedal 26. g

As shown in Figure 2, the clutch pedals heretofore described are allgrouped in close proximity to each other so that the operator maycontrol the various clutches when standing at one 7 position adjacent tothe frame 1. The journals which support the shaft 20 are carried bysupports 27 and the spool 19 is equipped with brake drums 28 engaged bybrakes 29 controlled by a lever 30', whereby the rotation of the spool19 may be controlled when disconnected from the sprocket 22.

Arranged adjacent to and in a plane above the spool 19 is a spool 29'journaled in suitable bearings carried by the frame. The spool 29" isemployed for operating mechanism designed especially for setting casingsor tubings in wells and has secured thereto a sprocket gear30 adapted tohave the sprocket chain 24 trained thereover when removed from thesprocket gear 22, thus it will be seen that the spool 29 may be drivenat different speeds from the power source.

A brake mechanism 31 is provided for the spool 29.

Rising from the frame 1 is a Samson post 32 pivotally supporting awalking beam 33 and the latter carries'at one end a mechanism 34 fordrilling wells, while the opposite end is connected to a pitman 35. Acrank shaft 36 is rotatably supported by the frame 1 rearwardly of thepower take-off shaft and the crank thereof has the pitman 35 journaledthereto. The shaft 36 has secured thereto a sprocket wheel 37 connectedto the sprocket wheel 7 by a sprocket chain 38.

A sprocket gear 39 is secured to the shaft 36 and is connected to asprocket gear 40 by a sprocket chain 41. The sprocket gear 40 is securedto a shaft 42 having mounted thereon a spool or drum 43 and the latteris equipped with a brake mechanism 44 controlled by a hand lever 45. It

is to be understood that the spool 43 is secured direct to the shaft 42and is employed for operating a standard sand reel assembly (not shown).

A sprocket gear 46 is journaled on the crank shaft 36 and is connectedand disconnected to the latter by a clutch 47 controlled by a hand lever48. The sprocket gear is employed for driving any auxiliary wellmechanism not provided for in this unit.

The post 32 is reinforced by a brace 49 and also carries a rest 50 forsupporting the walking beam 33 during the non-use of the latter.

From the foregoing description taken in connection with the accompanyingdrawings it will be seen that a device has been provided wherein aseries ofmechanisms employed in various well operations can be operatedfrom a single power source through a series of spools or drums designedespecially for the respective mechanisms and that the various spools andpower source comprise a single unit when assembled upon the main frame 1capable of being moved from one place to another with ease and at aminimum cost. Further, ,it is to be noted that the drives between thepower source and various spools or drums and crank shaft of the unit arecapable of successful operation without the danger of slippage by theelimination of belts heretofore employed in machines of similarcharacter and which cause a loss of power due to slippage.

With the machine of the character heretofore described, well drilling,tube placing, boring through sand and the removal of lost tools fromwells can be easily and quickly accomplished.

The engine or power source is centrally located upon the main frame ofthis device so that more eflicient and convenient distribution of powerto the various working units may be had.

While I have shown and described the preferred embodiment of myinvention, it will be understood that minor changes in construction,combination and arrangement of parts may be made without departing fromthe spirit and scope of my invention, as claimed.

What I claim is:

1. A portable rig front comprising a portable unitary base frame, aprime mover mounted thereon with its power take-off shaft disposedtransversely of said base frame and substantially midway between theends thereof, a plurality of cable spools mounted on said base frame ontransverse axes at one side of said power take-01f shaft, fast and slowspeed driving connections between said power take-off shaft and saidcable spools, a walking beam crank shaft and a sand reel mounted ontransverse axes on said base frame on the opposite side of said powertake-off shaft from said cable spools, and clutch controlled drivingconnections between said power take-off shaft and said crank shaft andsand reel for driving said crank shaft and sand reel independently ofsaid cable spools.

2. A portable rig front comprising a portable unitary base frame, aprime mover mounted thereon with its power take-off shaft disposedtransversely of said base frame and substantially midway between theends thereof, a plurality of cable spools mounted on said base frame ontransverse axes at one side of said power take-off shaft, an auxiliaryshaft journaled to the base frame and located between the power take-offshaft and said spools, fast and slow speed driving connections betweensaid power take-off shaft and the auxiliary shaft, selective drivingconnections between the auxiliary shaft and said spools, a walking beamcrank shaft and a sand reel mounted on transverse axes on said baseframe on the opposite side of said power take-off shaft from said cablespools, and clutch controlled driving connections between said powertake-off shaft and said crank shaft and sand reel for driving said crankshaft and sand reel independently of said cable spools.

3. A portable rig front comprising a portable unitary base frame, aprime mover mounted thereon with its power take-off shaft disposedtransversely of said base frame and substantially midway between theends thereof, a plurality of cable spools mounted on said base frame ontransverse axes at one side of said power take-off shaft, an auxiliaryshaft journaled to the base frame and located between the power take-offshaft and said spools, fast and slow speed driving connections betweensaid power take-off shaft and the auxiliary shaft, selective drivingconnections between the auxiliary shaft and said spools, a walking beamcrank shaft and a sand reel mounted on transverse axes on said baseframe on the opposite side of said power take-01f shaft from said cablespools, a clutch controlled driving connection between said powertake-off shaft and said crank shaft, and a second clutch controlleddriving connection between said crank shaft and sand reel, the first andsecond mentioned clutch controlled driving connections permittingdriving of said crank shaft and sand reel independently of said cablespools.

JAMES B. CLARK.

